US PATENT SUBCLASS 318 / 657
.~.~.~.~ Linear differential transformer

Current as of: June, 1999
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318 /   HD   ELECTRICITY: MOTIVE POWER SYSTEMS

560  DF  POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) {23}
638  DF  .~ With particular "error-detecting" means {13}
652  DF  .~.~ With particular position measuring instruments {7}
656  DF  .~.~.~ Differential transformer systems {5}
657.~.~.~.~ Linear differential transformer

DEFINITION

Classification: 318/657

(under subclass 656) Subject matter in which the differential transformer is the linear type. Included herein are relatively movable core and coil type linear differential transformers. A linear differential transformer is one in which the coils and core are physically arranged on line.